Power

With USB Power Delivery in mind, EPC has designed a 180W GaN dc-dc converter evaluation board. Its two-phase power section occupies only 24 x 24mm, using both sides of the board and ignoring input and output bulk capacitors. Called EPC91109 and intended to implement USB-PD 3.1, it delivers 12, 16 or 20V from an input range of 20 to 36V. ...

Torex Semiconductor has created a nano-power dc-dc converter that can occupy only 7.7 x 3.1mm with all external capacitors – the necessary inductor is inside the device package. Called XCL108 and drawing 400nA quiescent current, it is a boost converter that will operate from inputs between 650mV and 5.5V – starting from anything above 1.6V. The device is a series, ...

Infineon Technologies has announced a rad-hardened GaN transistor designed to operate in harsh space environments. It “is the first in-house manufactured GaN transistor to earn the highest quality certification of reliability assigned by the United States Defense Logistics Agency to the JANS specification MIL-PRF-19500/794”, according to the company. “The gallium nitride hemts [high electron mobility transistors] are engineered for mission-critical ...

Recom has created a wide input range 1.5 x 2inch 15W ac-dc converter that operates over part that operates over 18 – 264Vac, or 18 – 375Vdc. All parts have a 40 x 52.5mm footprint and stand 25.5mm tall. PCB versions (RAC15-xxSK/WI) have through-hole pins underneath, while the flying lead version (add /W suffix) have four 100mm wires protruding from the ...

Undocumented communication devices, including cellular radios, have been found in solar power inverters and energy storage batteries, according to Reuters. There is little additional information at this time: the news organisation has not been able to discover the identity of the manufacturers affected, and is not naming its human sources. While these undocumented links could simply be alternative routes for ...

Texas Instruments has joined the companies working with Nvidia on 800Vdc data centres. 800Vdc power-distribution architecture will provide the power density and conversion efficiency that future AI processors require, while minimizing the growth of the power supply’s size, weight and complexity,” said TI. Nvidia’s proposal is to convert 13.8kVac grid power directly to 800Vdc at the data centre perimeter. Compared with ...

Distributor TME is offering high power automotive connectors for electric vehicles from Amphenol GEC. There are two ranges: PowerLok G2 are for battery and traction connections at currents up to 300A, voltage up to 1kV, and conductors up to 150mm2.  Mated sealing is to IP67 PowerLok 4.0 G2 are physically smaller and for sensors and actuators at up to 60A, ...

Analog Devices has created a fast power op-amp that can handle ±55V rails and ±1A outputs, with a digital control bus for setting internal parameters. Called ADHV4710, the output can swing ±52V with ±100mA loading, and its rails can vary down to ±12V. Despite being able to drive ±1300V/μs into 1nF, it is a voltage feedback amplifier, that can handle ...

Seica will be revealing two power semicondctor testers at PCIM in Nurember next month: one for ac and dc characteristics, and the other for thermal resistance. S20 IS3 (right) is intended to work with SiC and GaN  as well as more conventional technologies, and is for ac and dc, static and dynamic testing. “It performs accurate and repeatable characterisation of ...

For hard-switched power topologies, Infineon is planning a 100V GaN transistors with a integrated Schottky diode. “Due to the lack of body diode in hard-switching applications, GaN-based topologies may incur higher power losses due to the larger effective body diode voltage of GaN devices,” according to the company, which explained: “GaN transistor reverse conduction voltage is dependent on the threshold ...